The [OverpoweredJS demo](https://overpoweredjs.com/demo.html) doesn't work in Firefox 143 (on Ubuntu 25.04): > **Demo Script Failed** > Issue: NetworkError when attempting to fetch resource. In DevTools, the request `https://api.ovpjs.com/fingerprint` returns an [`413 Request Entity Too Large`](https://developer.mozilla.org/Web/HTTP/Reference/Status/413).
The OverpoweredJS demo doesn't work in Firefox 143 (on Ubuntu 25.04):
In DevTools, the request
https://api.ovpjs.com/fingerprintreturns an413 Request Entity Too Large.